How to install a timber awning window

Tim
View the video

How to install a timber awning window

View the video
×

Project Overview

Installing a timber awning window into a wall cavity is a pretty straightforward job once you understand the basics. We show you the steps involved in properly securing the window in place. You’ll also learn how to install a waterproof flashing barrier and use masonite packers to level the frame.
Continue to step-by-step instructions
This D.I.Y. Advice is part of a series How to install an awning window

Step by Step Instructions

1 Install waterproof flashing onto the bottom of the timber awning window frame
2 Place the timber awning window in position
3 Mark up and drill pilot holes for the timber awning window frame
4 Level the timber awning window
5 Install the awning window
  • Step 1. Install waterproof flashing onto the bottom of the timber awning window frame

    Staple a strip of waterproof flashing onto the rear of the window frame so it can fold underneath and cover the base. Be sure to leave yourself plenty of overhang on either side. Staple that overhang tightly into position onto the sides of the window frame and trim any excess. This holds the flashing in place but leaves it loose at the front of the frame.
  • Step 2. Place the timber awning window in position

    Place the window into the wall opening. If it is a heavy window, get someone to help you with this step. Once the window is in place, hold it steady. Then send someone outside to firmly pull the flashing to make sure it is sitting clear at the front of the frame. 
  • Step 3. Mark up and drill pilot holes for the timber awning window frame

    Mark up and drill pilot holes near the top and bottom of the sides of the window frame. The holes should be about 40-50mm back from the window jamb and 50-75mm from the top and bottom of the frame. The width of the hole should match the width of the shank of the screw.
  • Step 4. Level the timber awning window

    Use your spirit level to check that the window is sitting level in the wall opening. If the window is not sitting exactly plumb, level it up with some masonite packers. Then use your ruler to make sure the frame is sitting flush with the internal walls.
  • Step 5. Install the awning window

    Place a packer in line with the top pilot hole, in between the frame and the wall. Then check that the side of the window is sitting plumb and flush with the internal wall. When you are sure everything is in place, drive screws through your pilot holes and into the frame of the house. To give your job the best finish, countersink your screws so they sit below the surface of the timber. That way you can cover them with putty before you paint.
diy chalkboard cabinet hanging in the garage 01:27

Shelving & Storage D.I.Y. upcycled chalkboard cabinet We take an old cabinet and upcycle it into a handy chalkboard cabinet that will give you somewhere to store tools and a place to write lists or plans for your next project.

honeycomb wall shelves 02:23

Shelving & Storage How to make D.I.Y. honeycomb floating wall shelves These honeycomb floating wall shelves are a modern and stylish way to make a feature of any wall in your house. They’re easy to make and they’ll give a somewhere to show off your favourite things.

bathroom rejuvination 01:44

Ideas & Makeovers Learn how to give your bathroom a makeover on a budget Simple and affordable ways to give your tired bathroom a makeover.

roses in garden

Planting & Growing Winter garden ideas It may be cold outside in most parts of New Zealand but there are still a few things that need to be done in the garden at this time of the year. But if you can’t face going outside, you can always bring your garden inside suggests Bunnings horticul...

diy wood and concrete kitchen island 05:43

Outdoor Living D.I.Y. wood and concrete kitchen island You’d be surprised how easy it is to make this wooden and concrete kitchen island from just a few simple tools and materials.

Modern living room DIY makeover 01:29

Living Room How to give your living room a modern D.I.Y. makeover There are a few simple ways to freshen up a tired living room and make it a real feature in your home. You can create more space by knocking out a wall and updating the furnishings to fit. By adding floating cabinetry and open shelves, you’ll have m...

black diy wooden sofa arm table 02:49

Living Room D.I.Y. wooden sofa arm table A sofa arm table is a great addition if you’re short on space or don’t have a coffee table in your living area.

hampton kitchen

Ideas & Makeovers Hamptons sanctuary Bright, open and stylish are the hallmarks of the Hamptons Sanctuary. The island bench doubles as a workspace and breakfast bar, while the bamboo benchtops and window panel cupboards complete the look.

Top of the content